1. Department of Materials Science and Engineering National Tsing‐Hua University Hsinchu 30013 Taiwan
2. Frontier Research Center on Fundamental and Applied Sciences of Matters National Tsing Hua University Hsinchu 30013 Taiwan
3. Department of Physics National Sun Yat‐Sen University Kaohsiung 80424 Taiwan
4. Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China Chengdu 610054 P. R. China
5. State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals Lanzhou University of Technology Lanzhou 730050 P. R. China
6. Department of Materials Science and Engineering National Cheng Kung University Tainan 701 Taiwan
7. Material and Chemical Research Laboratories Industrial Technology Research Institute (ITRI) Hsinchu 31040 Taiwan